Thread: Destroying Aluminum frame?
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Old 10-26-12 | 11:01 AM
  #34  
Phantoj
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Originally Posted by Looigi
'''Fatigue limit, endurance limit, and fatigue strength are all expressions used to describe a property of materials: the amplitude (or range) of cyclic stress that can be applied to the material without causing fatigue failure.[SUP][1][/SUP]Ferrous alloys and titanium alloys[SUP][2][/SUP] have a distinct limit, an amplitude below which there appears to be no number of cycles that will cause failure. Other structural metals such as aluminium and copper, do not have a distinct limit and will eventually fail even from small stress amplitudes. In these cases, a number of cycles (usually 10[SUP]7[/SUP]) is chosen to represent the fatigue life of the material.""

http://en.wikipedia.org/wiki/Fatigue_limit
However, recent research suggests that endurance limits do not actually exist, that if enough stress cycles are performed, even the smallest stress will eventually produce fatigue failure.[5][10]

http://en.wikipedia.org/wiki/Fatigue_limit
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